v0.4.0.0

Breaking changes (this could really break your code):

• Changed <|> to <> (Monoid is better for 'appending' than Alternative)
• Changed >^> to <|> - (Alternative now really means alternative)
• Changed toList to many (Use existing Alternative function instead of a custom one)
• Added some function (Alternative, default implementation won't work)
• C-lexer now supports parsing numbers up to 18 digits (E-notation is not optimized yet)